summary refs log tree commit diff
path: root/gnu/packages/emulators.scm
blob: 4471de9040e11a819718b381c2d57f3312ff2312 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2015 Paul van der Walt <paul@denknerd.org>
;;; Copyright © 2015, 2016, 2021 Sou Bunnbu <iyzsong@member.fsf.org>
;;; Copyright © 2015, 2016 Taylan Ulrich Bayırlı/Kammer <taylanbayirli@gmail.com>
;;; Copyright © 2015, 2018, 2023 David Thompson <dthompson2@worcester.edu>
;;; Copyright © 2016 Manolis Fragkiskos Ragkousis <manolis837@gmail.com>
;;; Copyright © 2016, 2017, 2018, 2020 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2017-2024 Nicolas Goaziou <mail@nicolasgoaziou.fr>
;;; Copyright © 2017, 2020, 2021 Tobias Geerinckx-Rice <me@tobias.gr>
;;; Copyright © 2017, 2018, 2019 Rutger Helling <rhelling@mykolab.com>
;;; Copyright © 2019 Pierre Neidhardt <mail@ambrevar.xyz>
;;; Copyright © 2019 David Wilson <david@daviwil.com>
;;; Copyright © 2020 Jakub Kądziołka <kuba@kadziolka.net>
;;; Copyright © 2020 Christopher Howard <christopher@librehacker.com>
;;; Copyright © 2021 Felipe Balbi <balbi@kernel.org>
;;; Copyright © 2021, 2024 Felix Gruber <felgru@posteo.net>
;;; Copyright © 2021, 2024 Maxim Cournoyer <maxim.cournoyer@gmail.com>
;;; Copyright © 2021 Guillaume Le Vaillant <glv@posteo.net>
;;; Copyright © 2023 c4droid <c4droid@foxmail.com>
;;; Copyright © 2023 Yovan Naumovski <yovan@gorski.stream>
;;; Copyright © 2023 Hendursaga <hendursaga@aol.com>
;;; Copyright © 2023 Zheng Junjie <873216071@qq.com>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu packages emulators)
  #:use-module (ice-9 match)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix gexp)
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix git-download)
  #:use-module (guix svn-download)
  #:use-module (guix hg-download)
  #:use-module (guix utils)
  #:use-module (gnu packages)
  #:use-module (gnu packages admin)
  #:use-module (gnu packages algebra)
  #:use-module (gnu packages assembly)
  #:use-module (gnu packages audio)
  #:use-module (gnu packages autogen)
  #:use-module (gnu packages autotools)
  #:use-module (gnu packages backup)
  #:use-module (gnu packages base)
  #:use-module (gnu packages bash)
  #:use-module (gnu packages bison)
  #:use-module (gnu packages boost)
  #:use-module (gnu packages cdrom)
  #:use-module (gnu packages check)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages containers)
  #:use-module (gnu packages cross-base)
  #:use-module (gnu packages curl)
  #:use-module (gnu packages digest)
  #:use-module (gnu packages elf)
  #:use-module (gnu packages flex)
  #:use-module (gnu packages fltk)
  #:use-module (gnu packages fonts)
  #:use-module (gnu packages fontutils)
  #:use-module (gnu packages freedesktop)
  #:use-module (gnu packages fribidi)
  #:use-module (gnu packages game-development)
  #:use-module (gnu packages gettext)
  #:use-module (gnu packages gl)
  #:use-module (gnu packages glib)
  #:use-module (gnu packages gnome)
  #:use-module (gnu packages graphics)
  #:use-module (gnu packages gtk)
  #:use-module (gnu packages image)
  #:use-module (gnu packages libedit)
  #:use-module (gnu packages libusb)
  #:use-module (gnu packages linux)
  #:use-module (gnu packages lua)
  #:use-module (gnu packages maths)
  #:use-module (gnu packages mp3)
  #:use-module (gnu packages music)
  #:use-module (gnu packages ncurses)
  #:use-module (gnu packages networking)
  #:use-module (gnu packages pkg-config)
  #:use-module (gnu packages pulseaudio)
  #:use-module (gnu packages python)
  #:use-module (gnu packages qt)
  #:use-module (gnu packages sdl)
  #:use-module (gnu packages sphinx)
  #:use-module (gnu packages sqlite)
  #:use-module (gnu packages texinfo)
  #:use-module (gnu packages textutils)
  #:use-module (gnu packages tls)
  #:use-module (gnu packages upnp)
  #:use-module (gnu packages video)
  #:use-module (gnu packages vulkan)
  #:use-module (gnu packages xdisorg)
  #:use-module (gnu packages xiph)
  #:use-module (gnu packages xml)
  #:use-module (gnu packages xorg)
  #:use-module (gnu packages web)
  #:use-module (guix build-system cmake)
  #:use-module (guix build-system glib-or-gtk)
  #:use-module (guix build-system gnu)
  #:use-module (guix build-system meson)
  #:use-module (guix build-system python)
  #:use-module (guix build-system qt))

(define-public vice
  (package
    (name "vice")
    (version "3.7.1")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://sourceforge/vice-emu/releases/"
                           "vice-" version ".tar.gz"))
       (sha256
        (base32 "165b1ixrarcqy1rl06yhaf46ni3j8lrbn8f3zf5nkc2d0bk12f3y"))))
    (build-system gnu-build-system)
    (arguments
     `(#:configure-flags '("--disable-html-docs"
                           "--disable-pdf-docs")))
    (native-inputs
     (list bison
           dos2unix
           flex
           `(,glib "bin") ; for glib-genmarshal, etc.
           pkg-config))
    (inputs
     (list alsa-lib
           glew
           glib
           gtk+
           pulseaudio
           sdl
           sdl-image
           xa))
    (home-page "https://vice-emu.sourceforge.io/")
    (synopsis "The versatile Commodore emulator")
    (description
     "VICE is a program that emulates the C64, the C64DTV, the C128, the
VIC20, practically all PET models, the PLUS4 and the CBM-II (aka
C610/C510).  An extra emulator is provided for C64 expanded with the CMD
SuperCPU.")
    (license license:gpl2+)))

(define-public blastem
  (package
    (name "blastem")
    (version "0.6.2")
    (source (origin
              (method hg-fetch)
              (uri (hg-reference
                    (url "https://www.retrodev.com/repos/blastem")
                    (changeset (string-append "v" version))))
              (file-name (string-append name "-" version "-checkout"))
              (sha256
               (base32
                "08ycfisivh9rb9vmijlrpdryaw8spd81ck48960p15cnf8h2535q"))
              (modules '((guix build utils)))
              (snippet
               '(begin
                  ;; TODO: Separately package and unbundle nuklear
                  (delete-file-recursively "zlib")))))
    (build-system gnu-build-system)
    (arguments
     `(#:make-flags (list (string-append "CC=" ,(cc-for-target))
                          "HOST_ZLIB=1"
                          "HAS_PROC=-DHAS_PROC"
                          (string-append "CONFIG_PATH="
                                         %output "/share/blastem")
                          (string-append "DATA_PATH="
                                         %output "/share/blastem"))
       #:tests? #f ; No check target and custom tests don't seem to build
       #:imported-modules
       ((guix build copy-build-system)
        ,@%gnu-build-system-modules)
       #:modules
       (((guix build copy-build-system)
         #:prefix copy:)
        (guix build gnu-build-system)
        (guix build utils))
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'fix-source
           (lambda _
             (substitute* (find-files "." ".*\\.[ch]")
               (("\"zlib/zlib.h\"") "<zlib.h>"))
             (substitute* "Makefile"
               (("CFLAGS:=-std=gnu99" all)
                (string-append all " -fcommon")))))
         (delete 'configure)
         (replace 'install
           (lambda* args
             (apply (assoc-ref copy:%standard-phases 'install)
                    #:install-plan
                    '(("." "bin" #:include ("blastem" "vgmplay"))
                      ("." "share/blastem"
                       #:include ("default.cfg" "rom.db")
                       #:exclude ("android"))
                      ("shaders" "share/blastem/shaders"))
                    args))))))
    (inputs
     (list glew mesa sdl2 zlib))
    (native-inputs
     (list pkg-config))
    (home-page "https://www.retrodev.com/blastem/")
    (synopsis "Genesis/Mega Drive emulator")
    (description "Blastem is an emulator for the Sega Genesis/Mega Drive
console.")
    (license license:gpl3+)))

(define-public desmume
  (package
    (name "desmume")
    (version "0.9.13")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/TASEmulators/desmume")
                    (commit (string-append "release_"
                                           (string-replace-substring version
                                                                     "." "_")))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "1ylxv0gjcxwj6dgwly2fjhyr0wrs5yazkim9nvqb8p72mxfwls5y"))))
    (build-system meson-build-system)
    (arguments
     (list #:configure-flags #~(list "-Dfrontend-cli=true"
                                     "-Dfrontend-gtk=true"
                                     "-Dgdb-stub=true"
                                     "-Dopenal=true")
           #:phases #~(modify-phases %standard-phases
                        ;; meson.build is in a subdirectory.
                        (add-after 'unpack 'chdir
                          (lambda _
                            (chdir "desmume/src/frontend/posix"))))))
    (native-inputs (list `(,glib "bin") gettext-minimal intltool pkg-config))
    (inputs (list agg
                  alsa-lib
                  gtk+
                  libpcap
                  openal
                  sdl2
                  soundtouch
                  zlib))
    (home-page "https://desmume.org/")
    (synopsis "Nintendo DS emulator")
    (description
     "DeSmuME is an emulator for the Nintendo DS handheld gaming console.")
    (license license:gpl2)))

;; Building from recent Git because the official 5.0 release no longer builds.
;; Following commits and revision numbers of beta versions listed at
;; https://dolphin-emu.org/download/.
(define-public dolphin-emu
  (let ((commit "f9deb68aee962564b1495ff04c54c015e58d086f")
        (revision "13669"))
    (package
      (name "dolphin-emu")
      (version (git-version "5.0" revision commit))
      (source
       (origin
         (method git-fetch)
         (uri (git-reference
               (url "https://github.com/dolphin-emu/dolphin")
               (commit commit)))
         (file-name (git-file-name name version))
         (sha256
          (base32 "1p8qsxlabgmz3nic0a9ghh9d3lzl5f8i3kmdrrvx6w8kdlp33018"))
         (modules '((guix build utils)))
         (snippet
          '(begin
             ;; Remove external stuff we don't need.
             (for-each (lambda (dir)
                         (delete-file-recursively
                           (string-append "Externals/" dir)))
                       '("LZO" "OpenAL" "Qt" "SFML" "curl" "ffmpeg"
                         "gettext" "hidapi" "libpng" "libusb" "mbedtls"
                         "miniupnpc" "MoltenVK" "zlib"))
             ;; Clean up source.
             (for-each delete-file
                       (find-files "." ".*\\.(bin|dsy|exe|jar|rar)$"))))))
      (build-system cmake-build-system)
      (arguments
       '(#:tests? #f
         #:phases
         (modify-phases %standard-phases
           (add-before 'configure 'generate-fonts&hardcore-libvulkan-path
             (lambda* (#:key inputs outputs #:allow-other-keys)
               (let ((fontfile
                      (search-input-file inputs
                                         "/share/fonts/truetype/wqy-microhei.ttc"))
                     (libvulkan
                      (search-input-file inputs "/lib/libvulkan.so")))
                 (chdir "docs")
                 (invoke "bash" "-c" "g++ -O2 $(freetype-config \
--cflags --libs) gc-font-tool.cpp -o gc-font-tool")
                 (invoke "./gc-font-tool" "a" fontfile "font_western.bin")
                 (invoke "./gc-font-tool" "s" fontfile "font_japanese.bin")
                 (copy-file "font_japanese.bin" "../Data/Sys/GC/font_japanese.bin")
                 (copy-file "font_western.bin" "../Data/Sys/GC/font_western.bin")
                 (chdir "..")
                 (substitute* "Source/Core/VideoBackends/Vulkan/VulkanLoader.cpp"
                   (("\"vulkan\", 1") (string-append "\"vulkan\""))
                   (("\"vulkan\"") (string-append "\"" libvulkan "\""))
                   (("Common::DynamicLibrary::GetVersionedFilename") ""))))))

         ;; The FindGTK2 cmake script only checks hardcoded directories for
         ;; glib/gtk headers.

         #:configure-flags
         (list (string-append "-DX11_INCLUDE_DIR="
                              (assoc-ref %build-inputs "libx11")
                              "/include")
               (string-append "-DX11_LIBRARIES="
                              (assoc-ref %build-inputs "libx11")
                              "/lib/libX11.so")
               "-DX11_FOUND=1")))
      (native-inputs
       (list gettext-minimal pkg-config))
      (inputs
       (list alsa-lib
             ao
             bluez
             curl
             eudev
             ffmpeg-4
             font-wqy-microhei
             freetype
             glew
             glib
             glu
             gtk+-2
             hidapi
             libevdev
             libpng
             libusb
             libx11
             libxi
             libxrandr
             lzo
             mbedtls-lts
             mesa
             miniupnpc
             openal
             pugixml
             pulseaudio
             qtbase-5
             sdl2
             sfml
             soil
             soundtouch
             vulkan-loader
             zlib))
      (home-page "https://dolphin-emu.org/")
      (synopsis "Nintendo Wii and GameCube emulator")
      (description
       "Dolphin is an emulator for two Nintendo video game consoles: the
GameCube and the Wii.  It provides compatibility with all PC controllers,
turbo speed, networked multiplayer, and graphical enhancements.")
      (supported-systems '("x86_64-linux" "aarch64-linux"))
      ; dolphin/Data/Sys/GC/font_*.bin: Licensed under ASL2.0.
      (license (list license:gpl2+ license:asl2.0 license:fdl1.2+)))))

(define-public dosbox
  (package
    (name "dosbox")
    (version "0.74-3")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://sourceforge.net/projects/dosbox"
                                  "/files/dosbox/" version "/dosbox-"
                                  version ".tar.gz/download"))
              (file-name (string-append name "-" version ".tar.gz"))
              (sha256
               (base32
                "02i648i50dwicv1vaql15rccv4g8h5blf5g6inv67lrfxpbkvlf0"))))
    (build-system gnu-build-system)
    (native-inputs
     (list autoconf automake))
    (inputs
     (list sdl
           libpng
           zlib
           alsa-lib
           glu
           mesa))
    (home-page "https://www.dosbox.com")
    (synopsis "X86 emulator with CGA/EGA/VGA/etc. graphics and sound")
    (description "DOSBox is a DOS-emulator that uses the SDL library.  DOSBox
also emulates CPU:286/386 realmode/protected mode, Directory
FileSystem/XMS/EMS, Tandy/Hercules/CGA/EGA/VGA/VESA graphics, a
SoundBlaster/Gravis Ultra Sound card for excellent sound compatibility with
older games.")
    (license license:gpl2+)))

(define-public dosbox-staging
  ;; This is not a patch staging area for DOSBox, but an unaffiliated fork.
  (package
    (name "dosbox-staging")
    (version "0.81.0")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/dosbox-staging/dosbox-staging")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1fkshxaq12pd72v8m2f3a6d6jk9gh39hn0846gfkfinvw7yykzrl"))))
    (build-system meson-build-system)
    (arguments
     (list #:configure-flags
           #~(list
              ;; These both try to git clone subprojects.
              "-Dunit_tests=disabled"   ; gtest
              "-Duse_mt32emu=false")
           #:phases
           #~(modify-phases %standard-phases
               (add-after 'unpack 'fix-includes
                 (lambda _
                   ;; This unnecessary file has an encoding error.
                   (delete-file "./src/libs/sdlcd/macosx/SDLOSXCAGuard.h")
                   (substitute* (find-files "." "\\.(cpp|h)")
                     (("^(#[[:space:]]*include <)(SDL[_.])" _ include file)
                      (string-append include "SDL2/" file))))))))
    (native-inputs
     (list pkg-config))
    (inputs
     (list alsa-lib
           fluidsynth
           iir
           libpng
           libslirp
           mesa
           opusfile
           sdl2
           sdl2-image
           sdl2-net
           speexdsp
           zlib))
    (home-page "https://dosbox-staging.github.io")
    (synopsis "DOS/x86 PC emulator focusing on ease of use")
    (description
     "The DOSBox Staging project attempts to modernize DOSBox.

DOSBox emulates an Intel x86 personal computer running an IBM PC compatible disk
operating system (@dfn{DOS}) in both real and protected modes.  It was primarily
designed to run old DOS games, but aims to be fully compatible with all DOS
programs and replicate the experience as accurately as possible.

This fork fixes some perceived issues with DOSBox and adds new features such as
Wayland support, PowerPC/POWER dynamic recompilation, and FluidSynth MIDI.
Other features may be removed: for example, physical CDs can no longer be
played, only emulated media.

Graphical emulation includes contemporary text mode, Hercules, CGA, EGA, VGA,
VESA, S3@tie{}Trio@tie{}64, and Tandy hardware.

Emulated legacy sound devices range from a rudimentary `PC speaker' buzzer to
the once state-of-the-art Gravis Utrasound sampling sound card.  The default is
a SoundBlaster 16 providing 16-bit stereo sound.  MIDI is forwarded to the host
through an emulated MPU-401.

An emulated hardware modem is also included, letting one host or dial a
@acronym{BBS, Bulletin Board System} across the Internet, network over IPX, and
emulate a serial nullmodem over TCP/IP.")
    (license license:gpl3+)))

(define-public qtmips
  (package
    (name "qtmips")
    (version "0.7.5")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/cvut/QtMips")
                    (commit (string-append "v" version))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "1fal7a8y5g0rqqjrk795jh1l50ihz01ppjnrfjrk9vkjbd59szbp"))))
    (build-system cmake-build-system)
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         (replace 'configure
           (lambda* (#:key outputs #:allow-other-keys)
             (invoke "qmake"
                     (string-append "PREFIX=" (assoc-ref outputs "out"))
                     "qtmips.pro")))
         (replace 'check
           (lambda* (#:key tests? #:allow-other-keys)
             (substitute* "tests/test.sh"
               (("qtchooser.*") ""))
             (substitute* '("tests/cpu_trap/test.sh"
                            "tests/registers/test.sh")
               (("sub-qtmips_cli") "qtmips_cli"))
             (if tests?
               (invoke "tests/run-all.sh")
               #t)))
         (replace 'install
           ;; There is no install target.
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (bin (string-append out "/bin"))
                    (apps (string-append out "/share/applications"))
                    (icons (string-append out "/share/icons/hicolor")))
               (install-file "qtmips_gui/qtmips_gui" bin)
               (install-file "qtmips_cli/qtmips_cli" bin)
               (install-file "data/qtmips.desktop" apps)
               (install-file "data/icons/qtmips_gui.svg"
                             (string-append icons "/scalable/apps"))
               (install-file "data/icons/qtmips_gui.png"
                             (string-append icons "/48x48/apps"))
               #t))))
       #:tests? #f))    ; test suite wants mips toolchain
    (inputs
     (list elfutils qtbase-5))
    (home-page "https://github.com/cvut/QtMips")
    (synopsis "MIPS CPU emulator")
    (description "This package contains a MIPS CPU emulator.  The simulator
accepts ELF statically linked executables compiled for 32-bit big-endian
MIPS target, targeting mips-linux-gnu or mips-elf.")
    (license license:gpl2+)))   ; License file says GPL3

(define-public emulation-station
  ;; No release for a long time, new commits fix build issues
  (let ((commit "9cc42adff67946175d2b7e25c6ae69cc374e98a0")
        (revision "1"))
    (package
      (name "emulation-station")
      (version (git-version "2.0.1" revision commit))
      (source (origin
                (method git-fetch) ; no tarball available
                (uri (git-reference
                      (url "https://github.com/Aloshi/EmulationStation")
                      (commit commit))) ; no version tag
                (file-name (git-file-name name version))
                (sha256
                 (base32
                  "1cva0ns650v17lfn8in095zci6lc43d23f1x3mlzc41qfqa6mbd1"))))
      (build-system cmake-build-system)
      (arguments
       '(#:tests? #f)) ; no tests
      (inputs
       `(("alsa-lib" ,alsa-lib)
         ("boost" ,boost)
         ("curl" ,curl)
         ("eigin" ,eigen)
         ("freeimage" ,freeimage)
         ("freetype" ,freetype)
         ("mesa" ,mesa)
         ("sdl2" ,sdl2)))
      (synopsis "Video game console emulator front-end")
      (description "EmulationStation provides a graphical front-end to a large
number of video game console emulators.  It features an interface that is
usable with any game controller that has at least 4 buttons, theming support,
and a game metadata scraper.")
      (home-page "https://emulationstation.org")
      (license license:expat))))

(define-public higan
  (package
    (name "higan")
    (version "110")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/higan-emu/higan")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "11rvm53c3p2f6zk8xbyv2j51xp8zmqnch7zravhj3fk590qrjrr2"))))
    (build-system gnu-build-system)
    (native-inputs
     (list pkg-config))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("ao" ,ao)
       ("eudev" ,eudev)
       ("gtk+" ,gtk+-2)
       ("gtksourceview-2" ,gtksourceview-2)
       ("libxrandr" ,libxrandr)
       ("libxv" ,libxv)
       ("mesa" ,mesa)
       ("openal" ,openal)
       ("pulseaudio" ,pulseaudio)
       ("sdl2" ,sdl2)))
    (arguments
     '(#:phases
       (let ((build-phase (assoc-ref %standard-phases 'build))
             (install-phase (assoc-ref %standard-phases 'install)))
         (modify-phases %standard-phases
           ;; The higan build system has no configure phase.
           (delete 'configure)
           (add-before 'build 'chdir-to-higan
             (lambda _
               (chdir "higan")
               #t))
           (add-before 'install 'create-/share/applications
             (lambda* (#:key outputs #:allow-other-keys)
               (let ((out (assoc-ref outputs "out")))
                 ;; It seems the author forgot to do this in the Makefile.
                 (mkdir-p (string-append out "/share/applications"))
                 #t)))
           (add-after 'install 'chdir-to-icarus
             (lambda _
               (chdir "../icarus")
               #t))
           (add-after 'chdir-to-icarus 'build-icarus build-phase)
           (add-after 'build-icarus 'install-icarus install-phase)
           (add-after 'install-icarus 'wrap-higan-executable
             (lambda* (#:key inputs outputs #:allow-other-keys)
               (let* ((out (assoc-ref outputs "out"))
                      (bin (string-append out "/bin"))
                      (higan (string-append bin "/higan"))
                      (higan-original (string-append higan "-original"))
                      (bash (search-input-file inputs "/bin/bash"))
                      (coreutils (assoc-ref inputs "coreutils"))
                      (mkdir (string-append coreutils "/bin/mkdir"))
                      (cp (string-append coreutils "/bin/cp"))
                      (cp-r (string-append cp " -r --no-preserve=mode")))
                 ;; First, have the executable make sure ~/.local/share/higan
                 ;; contains up to date files.  Higan insists on looking there
                 ;; for these data files.
                 (rename-file higan higan-original)
                 (with-output-to-file higan
                   (lambda ()
                     (display
                      (string-append
                       "#!" bash "\n"
                       ;; higan doesn't respect $XDG_DATA_HOME
                       mkdir " -p ~/.local/share\n"
                       cp-r " " out "/share/higan ~/.local/share\n"
                       "exec " higan-original))))
                 (chmod higan #o555)
                 ;; Second, make sure higan will find icarus in PATH.
                 (wrap-program higan
                   `("PATH" ":" prefix (,bin)))
                 #t)))))
       #:make-flags
       (list "compiler=g++"
             (string-append "prefix=" (assoc-ref %outputs "out")))
       ;; There is no test suite.
       #:tests? #f))
    (home-page "https://github.com/higan-emu/higan/")
    (synopsis "Multi-system emulator")
    (description
     "higan is a multi-system emulator with an uncompromising focus on
accuracy and code readability.

It currently emulates the following systems: Famicom, Famicom Disk System,
Super Famicom, Super Game Boy, Game Boy, Game Boy Color, Game Boy Advance,
Game Boy Player, SG-1000, SC-3000, Master System, Game Gear, Mega Drive, Mega
CD, PC Engine, SuperGrafx, MSX, MSX2, ColecoVision, Neo Geo Pocket, Neo Geo
Pocket Color, WonderSwan, WonderSwan Color, SwanCrystal, Pocket Challenge
V2.")
    (license license:gpl3+)))

(define-public mednafen
  (package
    (name "mednafen")
    (version "1.29.0")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "https://mednafen.github.io/releases/files/"
                           "mednafen-" version ".tar.xz"))
       (sha256
        (base32 "0binkxnki8w8jgiyf3xr9503m5cynlf5vylb087vxybp53qbqgys"))))
    (build-system gnu-build-system)
    (arguments
     `(#:configure-flags
       (list
        ;; "--with-external-mpcdec"
        "--with-external-lzo")))
    (native-inputs
     (list pkg-config))
    (inputs
     `(("alsa" ,alsa-lib)
       ("flac" ,flac)
       ;; ("libmpcdec" ,libmpcdec) FIXME: not recognized.
       ("libsndfile" ,libsndfile)
       ("lzo" ,lzo)
       ("sdl2" ,sdl2)
       ("zlib" ,zlib)))
    (home-page "https://mednafen.github.io/")
    (synopsis "Multi-system emulator utilizing OpenGL and SDL")
    (description
     "Mednafen is a portable, utilizing OpenGL and SDL, argument-driven
multi-system emulator.  Mednafen has the ability to remap hotkey functions and
virtual system inputs to a keyboard, a joystick, or both simultaneously.  Save
states are supported, as is real-time game rewinding.  Screen snapshots may be
taken, in the PNG file format, at the press of a button.  Mednafen can record
audiovisual movies in the QuickTime file format, with several different
lossless codecs supported.

The following systems are supported:

@itemize
@item Apple II/II+
@item Atari Lynx
@item Neo Geo Pocket (Color)
@item WonderSwan
@item GameBoy (Color)
@item GameBoy Advance
@item Nintendo Entertainment System
@item Super Nintendo Entertainment System/Super Famicom
@item Virtual Boy
@item PC Engine/TurboGrafx 16 (CD)
@item SuperGrafx
@item PC-FX
@item Sega Game Gear
@item Sega Genesis/Megadrive
@item Sega Master System
@item Sega Saturn (experimental, x86_64 only)
@item Sony PlayStation
@end itemize")
    ;; Main license is GPL2+.  Some parts are BSD-3.
    (license (list license:gpl2+ license:bsd-3))))

(define-public mgba
  (package
    (name "mgba")
    (version "0.10.3")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/mgba-emu/mgba")
             (commit version)))
       (file-name (git-file-name name version))
       (sha256
        (base32
         "1h4wsx76kylsn4f4418swbp6zjp1x94dfn751iks1i6i529pfay1"))
       (modules '((guix build utils)))
       (snippet
        ;; Make sure we don't use the bundled software.
        '(begin
           (for-each
            (lambda (subdir)
              (let ((lib-subdir (string-append "src/third-party/" subdir)))
                (delete-file-recursively lib-subdir)))
            '("libpng" "lzma" "sqlite3" "zlib"))))))
    (build-system cmake-build-system)
    (arguments
     `(#:tests? #f                      ;no "test" target
       #:configure-flags
       (list "-DBUILD_LTO=OFF" ;FIXME: <https://github.com/mgba-emu/mgba/issues/3115>
             "-DUSE_LZMA=OFF"           ;do not use bundled LZMA
             "-DUSE_LIBZIP=OFF")))      ;use "zlib" instead
    (native-inputs (list pkg-config qttools-5))
    (inputs
     (list ffmpeg
           libedit
           libelf
           libepoxy
           libpng
           mesa
           minizip
           ncurses
           qtbase-5
           qtmultimedia-5
           sdl2
           sqlite
           zlib))
    (home-page "https://mgba.io")
    (synopsis "Game Boy Advance emulator")
    (description
     "mGBA is an emulator for running Game Boy Advance games.  It aims to be
faster and more accurate than many existing Game Boy Advance emulators, as
well as adding features that other emulators lack.  It also supports Game Boy
and Game Boy Color games.")
    ;; Code is mainly MPL 2.0. "blip_buf.c" is LGPL 2.1+, "inih.c" is
    ;; BSD-3, and "discord-rpc" is Expat.
    (license (list license:mpl2.0 license:lgpl2.1+ license:bsd-3 license:expat))))

(define-public sameboy
  (package
    (name "sameboy")
    (version "0.16.3")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/LIJI32/SameBoy")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1jdjg59vzzkbi3c3qaxpsxqx955sb86cd3kcypb0nhjxbnwac1di"))))
    (build-system gnu-build-system)
    (native-inputs
     (list rgbds pkg-config))
    (inputs
     (list sdl2))
    (arguments
     `(#:tests? #f                      ; There are no tests
       #:make-flags `(,(string-append "CC=" ,(cc-for-target))
                      "NATIVE_CC=gcc" "CONF=release"
                      ,(string-append "DATA_DIR="
                                      (assoc-ref %outputs "out")
                                      "/share/sameboy/"))
       #:phases
       (modify-phases %standard-phases
         (delete 'configure)
         (replace 'install
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (bin (string-append out "/bin"))
                    (data (string-append out "/share/sameboy/")))
               (with-directory-excursion "build/bin/SDL"
                 (install-file "sameboy" bin)
                 (delete-file "sameboy")
                 (copy-recursively "." data))))))))
    (home-page "https://sameboy.github.io/")
    (synopsis "Accurate Game Boy, Game Boy Color and Super Game Boy emulator")
    (description "SameBoy is a user friendly Game Boy, Game Boy Color
and Super Game Boy emulator.  SameBoy is accurate and includes a wide
range of debugging features.  It has all the features one would expect
from an emulator---from save states to scaling filters.")
    (license license:expat)))

(define-public mupen64plus-core
  (package
    (name "mupen64plus-core")
    (version "2.5.9")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/mupen64plus/mupen64plus-core")
             (commit version)))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1iav8r3f0r44sq9pz4zjqrdzyspk412c117ywxz02qpjkhkf91a3"))))
    (build-system gnu-build-system)
    (native-inputs
     (list pkg-config nasm which))
    (inputs
     (list freetype
           glu
           libpng
           mesa
           sdl2
           zlib))
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         ;; The mupen64plus build system has no configure phase.
         (replace 'configure
           (lambda _
             (substitute* "projects/unix/Makefile"
               (("\\$\\(CFLAGS\\)")
                "$(CFLAGS) -fcommon"))))
         ;; Makefile is in a subdirectory.
         (add-before 'build 'chdir-to-project-directory
           (lambda _ (chdir "projects/unix"))))
       #:make-flags (let ((out (assoc-ref %outputs "out")))
                      (list "all" (string-append "PREFIX=" out)))
       ;; There are no tests.
       #:tests? #f))
    ;; As per the Makefile (in projects/unix/Makefile):
    (supported-systems '("i686-linux" "x86_64-linux"))
    (home-page "https://www.mupen64plus.org/")
    (synopsis "Nintendo 64 emulator core library")
    (description
     "Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator
which is capable of accurately playing many games.  This package contains the
core library.")
    (license license:gpl2+)))

(define-public mupen64plus-audio-sdl
  (package
    (name "mupen64plus-audio-sdl")
    (version "2.5.9")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/mupen64plus/mupen64plus-audio-sdl")
             (commit version)))
       (file-name (git-file-name name version))
       (sha256
        (base32 "0j78xk78fj7lhi6jk6npr7wm9ix7qyr5cbaaqsmk6pqw6gfx81kz"))))
    (build-system gnu-build-system)
    (native-inputs
     (list pkg-config which))
    (inputs
     (list mupen64plus-core sdl2))
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         ;; The mupen64plus build system has no configure phase.
         (delete 'configure)
         ;; Makefile is in a subdirectory.
         (add-before
          'build 'cd-to-project-dir
          (lambda _
            (chdir "projects/unix"))))
       #:make-flags
       (let ((out (assoc-ref %outputs "out"))
             (m64p (assoc-ref %build-inputs "mupen64plus-core")))
         (list "all"
               (string-append "PREFIX=" out)
               (string-append "APIDIR=" m64p "/include/mupen64plus")))
       ;; There are no tests.
       #:tests? #f))
    (home-page "https://www.mupen64plus.org/")
    (synopsis "Mupen64Plus SDL audio plugin")
    (description
     "Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator
which is capable of accurately playing many games.  This package contains the
SDL audio plugin.")
    (license license:gpl2+)))

(define-public mupen64plus-input-sdl
  (package
    (name "mupen64plus-input-sdl")
    (version "2.5.9")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/mupen64plus/mupen64plus-input-sdl")
             (commit version)))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1nnniyiy0wpg4m9918va31xxnz8r5qvj0z08vyq2is0b47ld3kq0"))))
    (build-system gnu-build-system)
    (native-inputs
     (list which))
    (inputs
     (list mupen64plus-core sdl2))
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         ;; The mupen64plus build system has no configure phase.
         (delete 'configure)
         ;; Makefile is in a subdirectory.
         (add-before
          'build 'cd-to-project-dir
          (lambda _
            (chdir "projects/unix"))))
       #:make-flags
       (let ((out (assoc-ref %outputs "out"))
             (m64p (assoc-ref %build-inputs "mupen64plus-core")))
         (list "all"
               (string-append "PREFIX=" out)
               (string-append "APIDIR=" m64p "/include/mupen64plus")))
       ;; There are no tests.
       #:tests? #f))
    (home-page "https://www.mupen64plus.org/")
    (synopsis "Mupen64Plus SDL input plugin")
    (description
     "Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator
which is capable of accurately playing many games.  This package contains the
SDL input plugin.")
    (license license:gpl2+)))

(define-public mupen64plus-rsp-hle
  (package
    (name "mupen64plus-rsp-hle")
    (version "2.5.9")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/mupen64plus/mupen64plus-rsp-hle")
             (commit version)))
       (file-name (git-file-name name version))
       (sha256
        (base32 "0sblabl3dp1jy9izbwyhx90690xdj96yfmwi47kpka8axzj93naq"))))
    (build-system gnu-build-system)
    (inputs
     (list mupen64plus-core))
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         ;; The mupen64plus build system has no configure phase.
         (delete 'configure)
         ;; Makefile is in a subdirectory.
         (add-before
          'build 'cd-to-project-dir
          (lambda _
            (chdir "projects/unix"))))
       #:make-flags
       (let ((out (assoc-ref %outputs "out"))
             (m64p (assoc-ref %build-inputs "mupen64plus-core")))
         (list "all"
               (string-append "PREFIX=" out)
               (string-append "APIDIR=" m64p "/include/mupen64plus")))
       ;; There are no tests.
       #:tests? #f))
    (home-page "https://www.mupen64plus.org/")
    (synopsis "Mupen64Plus RSP high-level emulation (HLE) plugin")
    (description
     "Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator
which is capable of accurately playing many games.  This package contains the
high-level emulation (HLE) RSP processor plugin.")
    (license license:gpl2+)))

(define-public mupen64plus-rsp-z64
  (package
    (name "mupen64plus-rsp-z64")
    (version "2.5.9")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/mupen64plus/mupen64plus-rsp-z64")
             (commit version)))
       (file-name (git-file-name name version))
       (sha256
        (base32 "02w7c6b7fc6q5rrvawxv48xp64crfs5jbs06f2fqqj4smysyjfcc"))))
    (build-system gnu-build-system)
    (inputs
     (list mupen64plus-core))
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         ;; The mupen64plus build system has no configure phase.
         (delete 'configure)
         ;; Makefile is in a subdirectory.
         (add-before
          'build 'cd-to-project-dir
          (lambda _
            (chdir "projects/unix"))))
       #:make-flags
       (let ((out (assoc-ref %outputs "out"))
             (m64p (assoc-ref %build-inputs "mupen64plus-core")))
         (list "all"
               (string-append "PREFIX=" out)
               (string-append "APIDIR=" m64p "/include/mupen64plus")))
       ;; There are no tests.
       #:tests? #f))
    (home-page "https://www.mupen64plus.org/")
    (synopsis "Mupen64Plus RSP Z64 plugin")
    (description
     "Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator
which is capable of accurately playing many games.  This package contains the
Z64 RSP processor plugin.")
    (license license:gpl2+)))

(define-public mupen64plus-video-arachnoid
  (package
    (name "mupen64plus-video-arachnoid")
    (version "2.5.9")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/mupen64plus/mupen64plus-video-arachnoid")
             (commit version)))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1bkzbmg53qiwvza9h45d76rbyn0isbb31cfp5qqza0fzmgjxhv1d"))))
    (build-system gnu-build-system)
    (native-inputs
     (list pkg-config which))
    (inputs
     (list mesa mupen64plus-core))
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         ;; The mupen64plus build system has no configure phase.
         (delete 'configure)
         ;; Makefile is in a subdirectory.
         (add-before
          'build 'cd-to-project-dir
          (lambda _
            (chdir "projects/unix"))))
       #:make-flags
       (let ((out (assoc-ref %outputs "out"))
             (m64p (assoc-ref %build-inputs "mupen64plus-core")))
         (list "all"
               (string-append "PREFIX=" out)
               (string-append "APIDIR=" m64p "/include/mupen64plus")))
       ;; There are no tests.
       #:tests? #f))
    (home-page "https://www.mupen64plus.org/")
    (synopsis "Mupen64Plus Arachnoid video plugin")
    (description
     "Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator
which is capable of accurately playing many games.  This package contains the
Arachnoid video plugin.")
    (license license:gpl2+)))

(define-public mupen64plus-video-glide64
  (package
    (name "mupen64plus-video-glide64")
    (version "2.5.9")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/mupen64plus/mupen64plus-video-glide64")
             (commit version)))
       (file-name (git-file-name name version))
       (sha256
        (base32 "0jscvr2imm9wj9jsgsp5815pv27f97w8g19ix0n39y9yy851qvrg"))))
    (build-system gnu-build-system)
    (native-inputs
     (list pkg-config which))
    (inputs
     (list mesa mupen64plus-core sdl2))
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         ;; The mupen64plus build system has no configure phase.
         (delete 'configure)
         ;; Makefile is in a subdirectory.
         (add-before 'build 'cd-to-project-dir
          (lambda _
            (chdir "projects/unix"))))
       #:make-flags
       (let ((out (assoc-ref %outputs "out"))
             (m64p (assoc-ref %build-inputs "mupen64plus-core")))
         (list "all"
               (string-append "PREFIX=" out)
               (string-append "APIDIR=" m64p "/include/mupen64plus")))
       ;; There are no tests.
       #:tests? #f))
    (home-page "https://www.mupen64plus.org/")
    (synopsis "Mupen64Plus Glide64 video plugin")
    (description
     "Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator
which is capable of accurately playing many games.  This package contains the
Glide64 video plugin.")
    (license license:gpl2+)))

(define-public mupen64plus-video-glide64mk2
  (package
    (name "mupen64plus-video-glide64mk2")
    (version "2.5.9")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/mupen64plus/mupen64plus-video-glide64mk2")
             (commit version)))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1hr0mv6y7v72101iff3zf6rd0wpqah936234m3hcb4cgna6zj9xy"))))
    (build-system gnu-build-system)
    (native-inputs
     (list pkg-config which))
    (inputs
     (list boost
           libpng
           mesa
           mupen64plus-core
           sdl2
           zlib))
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         ;; The mupen64plus build system has no configure phase.
         (delete 'configure)
         ;; Makefile is in a subdirectory.
         (add-before
          'build 'cd-to-project-dir
          (lambda _
            (chdir "projects/unix"))))
       #:make-flags
       (let ((out (assoc-ref %outputs "out"))
             (m64p (assoc-ref %build-inputs "mupen64plus-core")))
         (list "all"
               (string-append "PREFIX=" out)
               (string-append "APIDIR=" m64p "/include/mupen64plus")))
       ;; There are no tests.
       #:tests? #f))
    (home-page "https://www.mupen64plus.org/")
    (synopsis "Mupen64Plus Glide64MK2 video plugin")
    (description
     "Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator
which is capable of accurately playing many games.  This package contains the
Glide64MK2 video plugin.")
    (license license:gpl2+)))

(define-public mupen64plus-video-rice
  (package
    (name "mupen64plus-video-rice")
    (version "2.5.9")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/mupen64plus/mupen64plus-video-rice")
             (commit version)))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1vn24g7ahyv70jd06f5sq0j4bjs4axl2c0kfz4qdkpqsamsgxng8"))))
    (build-system gnu-build-system)
    (native-inputs
     (list pkg-config which))
    (inputs
     (list libpng mesa mupen64plus-core sdl2))
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         ;; The mupen64plus build system has no configure phase.
         (delete 'configure)
         ;; Makefile is in a subdirectory.
         (add-before
          'build 'cd-to-project-dir
          (lambda _
            (chdir "projects/unix"))))
       #:make-flags
       (let ((out (assoc-ref %outputs "out"))
             (m64p (assoc-ref %build-inputs "mupen64plus-core")))
         (list "all"
               (string-append "PREFIX=" out)
               (string-append "APIDIR=" m64p "/include/mupen64plus")))
       ;; There are no tests.
       #:tests? #f))
    (home-page "https://www.mupen64plus.org/")
    (synopsis "Mupen64Plus Rice video plugin")
    (description
     "Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator
which is capable of accurately playing many games.  This package contains the
Rice Video plugin.")
    (license license:gpl2+)))

(define-public mupen64plus-video-z64
  (package
    (name "mupen64plus-video-z64")
    (version "2.5.9")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/mupen64plus/mupen64plus-video-z64")
             (commit version)))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1i8dxa0lhcsm5ss1bf74dqnzaa2bw5naj6f56ixw2qjvybrnsmk2"))))
    (build-system gnu-build-system)
    (native-inputs
     (list pkg-config which))
    (inputs
     (list glew mupen64plus-core sdl2))
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         ;; The mupen64plus build system has no configure phase.
         (delete 'configure)
         ;; Makefile is in a subdirectory.
         (add-before
          'build 'cd-to-project-dir
          (lambda _
            (chdir "projects/unix")))
         ;; XXX Should be unnecessary with the next release.
         (add-before
          'build 'use-sdl2
          (lambda _
            (substitute* "Makefile"
              (("SDL_CONFIG = (.*)sdl-config" all prefix)
               (string-append "SDL_CONFIG = " prefix "sdl2-config"))))))
       #:make-flags
       (let ((out (assoc-ref %outputs "out"))
             (m64p (assoc-ref %build-inputs "mupen64plus-core")))
         (list "all"
               (string-append "PREFIX=" out)
               (string-append "APIDIR=" m64p "/include/mupen64plus")))
       ;; There are no tests.
       #:tests? #f))
    (home-page "https://www.mupen64plus.org/")
    (synopsis "Mupen64Plus Z64 video plugin")
    (description
     "Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator
which is capable of accurately playing many games.  This package contains the
Z64 video plugin.")
    (license license:gpl2+)))

(define-public mupen64plus-ui-console
  (package
    (name "mupen64plus-ui-console")
    (version "2.5.9")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/mupen64plus/mupen64plus-ui-console")
             (commit version)))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1dyrqdfs2jkalfd86bqidgd9y1hy03qgrgwk46d3xf3kyfmaa1cq"))
       (patches (search-patches "mupen64plus-ui-console-notice.patch"))))
    (build-system gnu-build-system)
    (native-inputs
     (list pkg-config which))
    (inputs
     (list sdl2))
    ;; Mupen64Plus supports a single data directory and a single plugin
    ;; directory in its configuration, yet we need data and plugin files from
    ;; a variety of packages.  The best way to deal with this is to install
    ;; all packages from which data and plugin files are needed into one's
    ;; profile, and point the configuration there.  Hence, propagate the most
    ;; important packages here to save the user from the bother.  The patch
    ;; mupen64plus-ui-console-notice also gives users instructions on what
    ;; they need to do in order to point the configuration to their profile.
    (propagated-inputs
     (list mupen64plus-core
           mupen64plus-audio-sdl
           mupen64plus-input-sdl
           mupen64plus-rsp-hle
           mupen64plus-video-glide64mk2
           mupen64plus-video-rice))
    (arguments
     (list
      #:phases
      #~(modify-phases %standard-phases
          ;; The mupen64plus build system has no configure phase.
          (delete 'configure)
          ;; Makefile is in a subdirectory.
          (add-before 'build 'cd-to-project-dir
            (lambda _
              (chdir "projects/unix"))))
      #:make-flags
      #~(let ((m64p #$(this-package-input "mupen64plus-core")))
          (list "all"
                (string-append "PREFIX=" #$output)
                (string-append "APIDIR=" m64p "/include/mupen64plus")
                ;; Trailing slash matters here.
                (string-append "COREDIR=" m64p "/lib/")))
      ;; There are no tests.
      #:tests? #f))
    (home-page "https://www.mupen64plus.org/")
    (synopsis "Mupen64Plus command line user interface")
    (description
     "Mupen64Plus is a cross-platform plugin-based Nintendo 64 (N64) emulator
which is capable of accurately playing many games.  This package contains the
command line user interface.  Installing this package is the easiest way
towards a working Mupen64Plus for casual users.")
    (license license:gpl2+)))

(define-public mupen64plus-video-gliden64
  ;; The latest release is 5 years old, doesn't build with GCC 11.
  (let ((commit "b021d8ee437266cfdd7251daf8c23203578b02b6")
        (revision "0"))
    (package
      (name "mupen64plus-video-gliden64")
      (version (git-version "4.0" revision commit))
      (source
       (origin
         (method git-fetch)
         (uri (git-reference
               (url "https://github.com/gonetz/GLideN64")
               (commit commit)))
         (file-name (git-file-name name version))
         (sha256
          (base32
           "0kcx5m8fjgrdi2dby8qbmkl78picip3jx7hg0ah1cazk192v2x98"))
         (modules '((guix build utils)))
         (snippet '(begin
                     ;; Delete 20 MiB of Windows-related files.
                     (delete-file-recursively "projects/msvc")
                     ;; Delete bundled library headers.
                     (delete-file-recursively "src/GLideNHQ/inc") ;zlib, libpng
                     (delete-file-recursively "src/inc/freetype")
                     ;; Unbundle xxhash.
                     (delete-file-recursively "src/xxHash")
                     (with-fluids ((%default-port-encoding "ISO-8859-1"))
                       (substitute* (find-files "." "\\.cpp$")
                         (("#include \"xxHash/xxhash.h\"")
                          "#include <xxhash.h>")))))))
      (build-system cmake-build-system)
      (arguments
       (list
        #:tests? #f                     ;no test suite
        #:configure-flags
        #~(list "-DMUPENPLUSAPI=ON"
                "-DUSE_SYSTEM_LIBS=ON"
                ;; Enable some optimizations.
                "-DVEC4_OPT=ON"
                #$(if (target-x86?)
                      ;; FIXME: Disabled for now as it causes a segmentation
                      ;; fault (see:
                      ;; https://github.com/gonetz/GLideN64/issues/2836).
                      "-DX86_OPT=OFF"    ;extra X86 ASM optimizations
                      "-DX86_OPT=OFF")
                #$(if (target-arm?)
                      "-DNEON_OPT=ON"
                      "-DNEON_OPT=OFF")
                #$(if (target-aarch64?)
                      "-DCRC_ARMV8=ON"  ;use ARMv8 hardware to compute CRCs
                      "-DCRC_OPT=ON"))  ;use xxHash to compute CRCs)
        #:phases
        #~(modify-phases %standard-phases
            (add-after 'unpack 'chdir
              ;; The src/ subdirectory contains the root CMakeLists.txt file.
              (lambda _
                (chdir "src")))
            (add-after 'chdir 'generate-Revision.h
              (lambda _
                (invoke "sh" "getRevision.sh" "--nogit"))))))
      (inputs (list freetype libpng mesa xxhash zlib))
      (home-page "https://github.com/gonetz/GLideN64")
      (synopsis "Mupen64Plus GlideN64 video plugin")
      (description "GLideN64 is a new generation graphics plugin for Nintendo
64 emulators, which offers better performance and compatibility compared to
the original Glide64 plugin.  This version is built for use with the
Mupen64Plus emulator.")
      (license license:gpl2+))))

(define-public nestopia-ue
  (package
    (name "nestopia-ue")
    (version "1.51.1")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/rdanbrook/nestopia")
             (commit version)))
       (file-name (git-file-name name version))
       (sha256
        (base32 "1g19gz33jav00rwzkpcnynf5ps41vl64a9qx0xjd6lva4bgn8s57"))))
    (build-system gnu-build-system)
    (native-inputs
     (list autoconf autoconf-archive automake pkg-config))
    (inputs
     `(("fltk" ,fltk)
       ("fontconfig" ,fontconfig)
       ("libarchive" ,libarchive)
       ("libepoxy" ,libepoxy)
       ("libxft" ,libxft)
       ("libxrender" ,libxrender)
       ("sdl2" ,sdl2)
       ("zlib" ,zlib)))
    (arguments
     '(;; There are no tests.
       #:tests? #f))
    (home-page "http://0ldsk00l.ca/nestopia/")
    (synopsis "Nintendo Entertainment System (NES/Famicom) emulator")
    (description
     "Nestopia UE (Undead Edition) is a fork of the Nintendo Entertainment
System (NES/Famicom) emulator Nestopia, with enhancements from members of the
emulation community.  It provides highly accurate emulation.")
    (license license:gpl2+)))

(define-public libretro-lowresnx
  (package
    (name "libretro-lowresnx")
    (version "1.2")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/timoinutilis/lowres-nx")
                    (commit (string-append "v" version))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "0b0vg3iz342dpkffvf7frsnqh8inj8yzi8550bsx8vnbpq5r2ay5"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f                    ; no tests
       #:make-flags (list "-C" "platform/LibRetro"
                          (string-append "CC=" ,(cc-for-target)))
       #:phases
       (modify-phases %standard-phases
         (delete 'configure)          ; no configure script
         (replace 'install
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (libretrodir (string-append out "/lib/libretro")))
               (install-file "platform/LibRetro/lowresnx_libretro.so"
                             libretrodir)
               #t))))))
    (home-page "https://lowresnx.inutilis.com/")
    (synopsis "Libretro core for LowRES NX")
    (description "LowRES NX is a simulated retro game console, which can be
programmed in the classic BASIC language.  This package provides a libretro
core allowing the lowRES NX programs to be used with libretro frontends such
as RetroArch.")
    (license license:zlib)))

(define-public retroarch
  (package
    (name "retroarch")
    (version "1.18.0")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/libretro/RetroArch")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "0wdl9zrb1gpqgrxxmv6fida1si1s5g6061aja9dm0hnbpa8cbsdq"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f                      ; no tests
       #:phases
       (modify-phases %standard-phases
         (replace 'configure
           (lambda* (#:key inputs outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (etc (string-append out "/etc"))
                    (vulkan (assoc-ref inputs "vulkan-loader"))
                    (wayland-protocols (assoc-ref inputs "wayland-protocols")))
               ;; Hard-code some store file names.
               (substitute* "gfx/common/vulkan_common.c"
                 (("libvulkan.so") (string-append vulkan "/lib/libvulkan.so")))
               (substitute* "gfx/common/wayland/generate_wayland_protos.sh"
                 (("/usr/local/share/wayland-protocols")
                 (string-append wayland-protocols "/share/wayland-protocols")))

               ;; Without HLSL, we can still enable GLSLANG and Vulkan support.
               (substitute* "qb/config.libs.sh"
                 (("[$]HAVE_GLSLANG_HLSL") "notcare"))

               ;; The configure script does not yet accept the extra arguments
               ;; (like ‘CONFIG_SHELL=’) passed by the default configure phase.
               (invoke
                 "./configure"
                 ,@(if (string-prefix? "armhf" (or (%current-target-system)
                                                  (%current-system)))
                       '("--enable-neon" "--enable-floathard")
                       '())
                 (string-append "--prefix=" out)
                 ;; Non-free software are available through the core updater,
                 ;; disable it.  See <https://issues.guix.gnu.org/38360>.
                 "--disable-update_cores"
                 "--disable-builtinmbedtls"
                 "--disable-builtinbearssl"
                 "--disable-builtinzlib"
                 "--disable-builtinflac"
                 "--disable-builtinglslang")))))))
    (inputs
     (list alsa-lib
           eudev
           ffmpeg
           flac
           freetype
           glslang
           libxinerama
           libxkbcommon
           libxml2
           libxrandr
           libxv
           mbedtls-lts
           mesa
           openal
           openssl
           pulseaudio
           python
           qtbase-5
           sdl2
           spirv-headers
           spirv-tools
           vulkan-loader
           wayland
           zlib))
    (native-inputs
     (list pkg-config wayland-protocols which))
    (native-search-paths
     (list (search-path-specification
            (variable "LIBRETRO_DIRECTORY")
            (separator #f)              ; single entry
            (files '("lib/libretro")))))
    (home-page "https://www.libretro.com/")
    (synopsis "Reference frontend for the libretro API")
    (description
     "Libretro is a simple but powerful development interface that allows for
the easy creation of emulators, games and multimedia applications that can plug
straight into any libretro-compatible frontend.  RetroArch is the official
reference frontend for the libretro API, currently used by most as a modular
multi-system game/emulator system.")
    (license license:gpl3+)))

(define-public wasm4
  (package
    (name "wasm4")
    (version "2.5.4")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/aduros/wasm4")
                    (commit (string-append "v" version))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "0ycnznwy4i4fw6l507y5xm986rxqvnpl971725q8xinsnq2swpnl"))))
    (build-system cmake-build-system)
    (arguments
     (list
      #:tests? #f ; no check target
      #:configure-flags
      #~(list (string-append "-DCMAKE_C_FLAGS="
                             "-I" #$minifb "/include "
                             "-I" #$wasm3 "/include"))
      #:phases
      '(modify-phases %standard-phases
         ;; WASM4's source is a combination of multiple runtimes.  We want to
         ;; build the native one.
         (add-after 'unpack 'chdir-to-native-runtime
           (lambda _
             (chdir "runtimes/native")))
         ;; WASM4 uses git submodules to bundle several dependencies, which we
         ;; have instead made dedicated packages for.  This phase hacks the
         ;; build system to use our own stuff.
         (add-after 'chdir-to-native-runtime 'unbundle
           (lambda _
             (substitute* "CMakeLists.txt"
               ;; These directories do not exist because we aren't pulling in
               ;; submodules.
               (("add_subdirectory\\(vendor/minifb\\)") "")
               (("add_subdirectory\\(vendor/cubeb\\)") "")
               ;; Add additional libraries needed to successfully link the
               ;; wasm4 executable using the unbundled dependencies.
               (("target_link_libraries\\(wasm4 minifb cubeb\\)")
                "target_link_libraries(wasm4 m GL X11 xkbcommon minifb cubeb m3)")))))))
    (inputs (list cubeb minifb wasm3))
    (synopsis "WebAssembly fantasy console")
    (description "WASM-4 is a low-level fantasy game console for building
small games with WebAssembly.  Game cartridges (ROMs) are small,
self-contained .wasm files that can be built with any programming language
that compiles to WebAssembly.")
    (home-page "https://wasm4.org")
    (license license:isc)))

(define-public scummvm
  (package
    (name "scummvm")
    (version "2.8.1")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "https://downloads.scummvm.org/frs/scummvm/" version
                           "/scummvm-" version ".tar.xz"))
       (sha256
        (base32 "1dr70z1dkfw2gp43jq0qp7g73glr36a7qdcv1jvp1m927nhz95vy"))))
    (build-system gnu-build-system)
    (arguments
     (list
      #:tests? #f                                   ;require "git"
      #:configure-flags #~(list "--enable-release") ;for optimizations
      #:phases
      #~(modify-phases %standard-phases
          (replace 'configure
            ;; configure does not work followed by both "SHELL=..." and
            ;; "CONFIG_SHELL=..."; set environment variables instead
            (lambda* (#:key inputs configure-flags #:allow-other-keys)
              (let ((bash (search-input-file inputs "/bin/bash"))
                    (flags `(,(string-append "--prefix=" #$output)
                             ,@configure-flags)))
                (setenv "SHELL" bash)
                (setenv "CONFIG_SHELL" bash)
                (apply invoke "./configure" flags)))))))
    (native-inputs
     (list nasm pkg-config))
    (inputs
     (list alsa-lib
           faad2
           fluidsynth
           freetype
           fribidi
           glew
           giflib
           liba52
           flac
           libjpeg-turbo
           libmad
           libmpeg2
           libogg
           libpng
           libtheora
           libvorbis
           (sdl-union (list sdl2 sdl2-net))
           zlib))
    (home-page "https://www.scummvm.org/")
    (synopsis "Engine for several graphical adventure games")
    (description "ScummVM is a program which allows you to run certain
classic graphical point-and-click adventure games, provided you
already have their data files.  The clever part about this: ScummVM
just replaces the executables shipped with the games, allowing you to
play them on systems for which they were never designed!")
    (license license:gpl2+)))

(define-public libticables2
  (package
    (name "libticables2")
    (version "1.3.5")
    (source (origin
              (method url-fetch)
              (uri "https://www.ticalc.org/pub/unix/tilibs.tar.gz")
              (sha256
               (base32
                "07cfwwlidgx4fx88whnlch6y1342x16h15lkvkkdlp2y26sn2yxg"))))
    (build-system gnu-build-system)
    (arguments
     `(#:configure-flags (list "--enable-libusb10")
       #:phases
       (modify-phases %standard-phases
         (replace 'unpack
           (lambda* (#:key source #:allow-other-keys)
             (invoke "tar" "xvkf" source)
             (invoke "tar" "xvkf"
                     (string-append "tilibs2/libticables2-"
                                    ,version ".tar.bz2"))
             (chdir (string-append "libticables2-" ,version))
             #t)))))
    (native-inputs
     (list autoconf
           autogen
           automake
           gnu-gettext
           libtool
           pkg-config))
    (inputs
     (list glib libusb))
    (synopsis "Link cable library for TI calculators")
    (description
     "This package contains libticables, a library for operations on
@acronym{TI, Texas Instruments} calculator link cables.

This is a part of the TiLP project.")
    (home-page "http://lpg.ticalc.org/prj_tilp/")
    (license license:gpl2+)))

(define-public libticonv
  (package
    (name "libticonv")
    (version "1.1.5")
    (source (origin
              (method url-fetch)
              (uri "https://www.ticalc.org/pub/unix/tilibs.tar.gz")
              (sha256
               (base32
                "07cfwwlidgx4fx88whnlch6y1342x16h15lkvkkdlp2y26sn2yxg"))))
    (build-system gnu-build-system)
    (arguments
     ;; build fails with out --enable-iconv (...?)
     `(#:configure-flags (list "--enable-iconv")
       #:phases
       (modify-phases %standard-phases
         (replace 'unpack
           (lambda* (#:key source #:allow-other-keys)
             (invoke "tar" "xvkf" source)
             (invoke "tar" "xvkf"
                     (string-append "tilibs2/libticonv-"
                                    ,version ".tar.bz2"))
             (chdir (string-append "libticonv-" ,version))
             #t)))))
    (native-inputs
     (list autoconf automake libtool pkg-config))
    (inputs
     (list glib))
    (synopsis "Character conversion library for TI calculators")
    (description
     "This package contains libticonv, a library to support working with
@acronym{TI, Texas Instruments} calculator charsets.

This is a part of the TiLP project.")
    (home-page "http://lpg.ticalc.org/prj_tilp/")
    (license license:gpl2+)))

(define-public libtifiles2
  (package
    (name "libtifiles2")
    (version "1.1.7")
    (source (origin
              (method url-fetch)
              (uri "https://www.ticalc.org/pub/unix/tilibs.tar.gz")
              (sha256
               (base32
                "07cfwwlidgx4fx88whnlch6y1342x16h15lkvkkdlp2y26sn2yxg"))))
    (build-system gnu-build-system)
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (replace 'unpack
           (lambda* (#:key source #:allow-other-keys)
             (invoke "tar" "xvkf" source)
             (invoke "tar" "xvkf"
                     (string-append "tilibs2/libtifiles2-"
                                    ,version ".tar.bz2"))
             (chdir (string-append "libtifiles2-" ,version))
             #t)))))
    (native-inputs
     (list autoconf automake gnu-gettext libtool pkg-config))
    (inputs
     (list glib libarchive libticonv))
    (synopsis "File functions library for TI calculators")
    (description
     "This package contains libticonv, a library to support working with
@acronym{TI, Texas Instruments} calculator files.

This is a part of the TiLP project.")
    (home-page "http://lpg.ticalc.org/prj_tilp/")
    (license license:gpl2+)))

(define-public libticalcs2
  (package
    (name "libticalcs2")
    (version "1.1.9")
    (source (origin
              (method url-fetch)
              (uri "https://www.ticalc.org/pub/unix/tilibs.tar.gz")
              (sha256
               (base32
                "07cfwwlidgx4fx88whnlch6y1342x16h15lkvkkdlp2y26sn2yxg"))))
    (build-system gnu-build-system)
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (replace 'unpack
           (lambda* (#:key source #:allow-other-keys)
             (invoke "tar" "xvkf" source)
             (invoke "tar" "xvkf"
                     (string-append "tilibs2/libticalcs2-"
                                    ,version ".tar.bz2"))
             (chdir (string-append "libticalcs2-" ,version))
             #t)))))
    (native-inputs
     (list autoconf automake gnu-gettext libtool pkg-config))
    (inputs
     (list glib libarchive libticables2 libticonv libtifiles2))
    (synopsis "Support library for TI calculators")
    (description
     "This project aims to develop a multi-platform linking program for use
with all @acronym{TI, Texas Instruments} graphing calculators (TI73 to
V200PLT).

This is a part of the TiLP project.")
    (home-page "http://lpg.ticalc.org/prj_tilp/")
    (license license:gpl2+)))

(define-public mame
  (package
    (name "mame")
    (version "0.252")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/mamedev/mame")
             (commit (apply string-append "mame" (string-split version #\.)))))
       (file-name (git-file-name name version))
       (sha256
        (base32 "07qhcm1v47sy2wj30nx3cbhvcbgki0cl83gabr0miiw60fhgyn6j"))
       (modules '((guix build utils)))
       (snippet
        ;; Remove bundled libraries.
        '(begin
           (with-directory-excursion "3rdparty"
             (for-each delete-file-recursively
                       '("asio" "expat" "glm" "libflac" "libjpeg" "lua"
                         "portaudio" "portmidi" "pugixml" "rapidjson" "SDL2"
                         "SDL2-override" "sqlite3" "utf8proc" "zlib")))))))
    (build-system gnu-build-system)
    (arguments
     (list
      #:make-flags
      #~(cons*
         ;; A 'strict-overflow' error pops up on i686 so disable '-Werror'.
         "NOWERROR=1"
         (string-append "QT_HOME=" #$(this-package-input "qtbase"))
         (string-append "SDL_INI_PATH=" #$output "/share/mame/ini")
         (map (lambda (lib)
                (string-append "USE_SYSTEM_LIB_" (string-upcase lib) "=1"))
              '("asio" "expat" "flac" "glm" "jpeg" "lua" "portaudio" "portmidi"
                "pugixml" "rapidjson" "sqlite3" "utf8proc" "zlib")))
      #:tests? #f                       ;no test in regular release
      #:phases
      #~(modify-phases %standard-phases
          (delete 'configure)
          (add-after 'build 'build-documentation
            (lambda _ (invoke "make" "-C" "docs" "man" "info")))
          (replace 'install
            ;; Upstream does not provide an installation phase.
            (lambda _
              (let ((share (string-append #$output "/share/mame")))
                ;; Install data.
                (for-each (lambda (dir)
                            (copy-recursively dir (string-append share "/" dir)))
                          '("artwork" "bgfx" "ctrlr" "hash" "ini" "language"
                            "plugins" "samples"))
                (let ((keymaps (string-append share "/keymaps")))
                  (for-each (lambda (file) (install-file file keymaps))
                            (find-files "keymaps" ".*LINUX\\.map")))
                (let ((fonts (string-append share "/fonts")))
                  (install-file "uismall.bdf" fonts))
                (when (file-exists? "mame64")
                  (rename-file "mame64" "mame"))
                (install-file "mame" (string-append #$output "/bin")))))
          (add-after 'install 'install-documentation
            (lambda _
              (let ((man (string-append #$output "/share/man/man1"))
                    (info (string-append #$output "/share/info")))
                (install-file "docs/build/man/MAME.1" man)
                (install-file "docs/build/texinfo/MAME.info" info))))
          (add-after 'install 'install-ini-file
            ;; Generate an ini file so as to set some directories (e.g., roms)
            ;; to a writable location, i.e., "$HOME/.mame/" and "$HOME/mame/".
            ;;
            ;; XXX: We need to insert absolute references to the store.  It can
            ;; be an issue if they leak into user's home directory, e.g., with
            ;; "mame -createconfig" and the package is later GC'ed.
            (lambda _
              (let* ((share (string-append #$output "/share/mame"))
                     (ini (string-append share "/ini")))
                (with-output-to-file (string-append ini "/mame.ini")
                  (lambda _
                    (format #t
                            "inipath              $HOME/.mame;~a/ini~@
                            homepath             $HOME/mame~@
                            rompath              $HOME/mame/roms~@
                            samplepath           $HOME/mame/samples;~a/samples~@
                            cheatpath            $HOME/mame/cheat~@
                            artpath              $HOME/mame/artwork;~a/artwork~@
                            crosshairpath        $HOME/mame/crosshair~@
                            snapshot_directory   $HOME/mame/snapshots~@
                            hashpath             ~a/hash~@
                            fontpath             $HOME/mame/fonts;~a/fonts~@
                            ctrlrpath            $HOME/mame/ctrlr;~a/ctrlr~@
                            bgfx_path            ~a/bgfx~@
                            pluginspath          $HOME/mame/plugins;~a/plugins~@
                            languagepath         ~a/language~@
                            cfg_directory        $HOME/.mame/cfg~@
                            nvram_directory      $HOME/.mame/nvram~@
                            input_directory      $HOME/.mame/inp~@
                            state_directory      $HOME/.mame/sta~@
                            diff_directory       $HOME/.mame/diff~@
                            comment_directory    $HOME/.mame/comments~%"
                            share share share share share share share share
                            share)))
                (with-output-to-file (string-append ini "/ui.ini")
                  (lambda _
                    (format #t
                            "historypath          $HOME/mame/history~@
                            categorypath         $HOME/mame/folders~@
                            cabinets_directory   $HOME/mame/cabinets~@
                            cpanels_directory    $HOME/mame/cpanel~@
                            pcbs_directory       $HOME/mame/pcb~@
                            flyers_directory     $HOME/mame/flyers~@
                            titles_directory     $HOME/mame/titles~@
                            ends_directory       $HOME/mame/ends~@
                            marquees_directory   $HOME/mame/marquees~@
                            artwork_preview_directory $HOME/mame/artpreview~@
                            bosses_directory     $HOME/mame/bosses~@
                            logos_directory      $HOME/mame/logo~@
                            scores_directory     $HOME/mame/scores~@
                            versus_directory     $HOME/mame/versus~@
                            gameover_directory   $HOME/mame/gameover~@
                            howto_directory      $HOME/mame/howto~@
                            select_directory     $HOME/mame/select~@
                            icons_directory      $HOME/mame/icons~@
                            covers_directory     $HOME/mame/covers~@
                            ui_path              $HOME/.mame/ui~%"))))))
          (add-after 'install 'install-desktop-file
            (lambda _
              (let ((desktop (string-append #$output "/share/applications"))
                    (executable (string-append #$output "/bin/mame")))
                (mkdir-p desktop)
                (with-output-to-file (string-append desktop "/mame.desktop")
                  (lambda _
                    (format #t
                            "[Desktop Entry]~@
                           Name=mame~@
                           Comment=Multi-purpose emulation framework~@
                           Exec=~a~@
                           TryExec=~@*~a~@
                           Terminal=false~@
                           Type=Application~@
                           Categories=Game;Emulator;~@
                           Keywords=Game;Emulator;Arcade;~%"
                            executable)))))))))
    (native-inputs
     (list pkg-config
           python-sphinx
           python-sphinxcontrib-svg2pdfconverter
           texinfo))
    (inputs
     (list alsa-lib
           asio
           expat
           flac
           fontconfig
           glm
           libjpeg-turbo
           libxi
           libxinerama
           lua
           portaudio
           portmidi
           pugixml
           pulseaudio
           python-wrapper
           qtbase-5
           rapidjson
           (sdl-union (list sdl2 sdl2-ttf))
           sqlite
           utf8proc
           zlib))
    (home-page "https://www.mamedev.org")
    (synopsis "Multi-purpose emulation framework")
    (description "MAME's purpose is to preserve decades of software
history.  As electronic technology continues to rush forward, MAME
prevents this important @emph{vintage} software from being lost and
forgotten.  This is achieved by documenting the hardware and how it
functions.  The source code to MAME serves as this documentation.")
    ;; The MAME project as a whole is distributed under the terms of GPL2+.
    ;; However, over 90% of the files are under Expat license.  Also, artwork,
    ;; keymaps, languages and samples are under CC0.
    (license (list license:gpl2+ license:expat license:cc0))))

(define-public gnome-arcade
  (package
    (name "gnome-arcade")
    (version "0.240")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/strippato/gnome-arcade")
             (commit (string-append "v." version))))
       (file-name (git-file-name name version))
       (sha256
        (base32
         "110dpbbcj73s3i2zcnay0kdpsngcpq8mif88279pdc2967ld0a6r"))))
    (build-system cmake-build-system)
    (arguments
     (list
      #:tests? #f                       ; No tests.
      #:configure-flags
      #~(list
         (string-append "-DMAME_BIN=\""
                        #$(this-package-input "mame")
                        "/bin/mame\"")
         (string-append "-DAPP_RES=\"" #$output "/share/gnome-arcade/\""))
      #:phases
      #~(modify-phases %standard-phases
          (add-before 'build 'fix-paths
            (lambda _
              (substitute* "../source/src/config.c"
                (("/usr/share") (string-append #$output "/share")))))
          (replace 'install
            (lambda _
              (let ((bin (string-append #$output "/bin"))
                    (rom (string-append #$output
                                        "/share/gnome-arcade/data/rom"))
                    (tile (string-append #$output
                                         "/share/gnome-arcade/data/tile")))
                (mkdir-p bin)
                (install-file "../gnome-arcade" bin)
                (copy-recursively "../source/res"
                                  (string-append #$output
                                                 "/share/gnome-arcade/res"))
                (mkdir-p rom)
                (install-file "../source/data/rom/ROM.TXT" rom)
                (mkdir-p tile)
                (install-file "../source/data/tile/TILE.TXT" tile)))))))
    (native-inputs
     (list pkg-config))
    (inputs
     (list gtk+ libarchive libevdev mame vlc))
    (home-page "https://github.com/strippato/gnome-arcade")
    (synopsis "Minimal MAME frontend")
    (description
     "Gnome Arcade is a minimal GTK+ frontend for MAME, the multi-purpose
arcade and console emulator.")
    (license license:gpl3+)))

(define-public gnusim8085
  (package
    (name "gnusim8085")
    (version "1.4.1")
    (source (origin
              (method url-fetch)
              (uri (string-append
                    "https://github.com/srid/GNUSim8085/releases/download/"
                    version "/gnusim8085-" version ".tar.gz"))
              (sha256
               (base32
                "05x0is0ckagb3r74p6lw9b8nqrrh7q2v4jvc4cnhljchz9x7kw2a"))))
    (native-inputs (list pkg-config))
    (inputs (list gtksourceview-3 adwaita-icon-theme))
    (build-system glib-or-gtk-build-system)
    (home-page "https://gnusim8085.srid.ca")
    (synopsis "Graphical simulator for the Intel 8085 microprocessor")
    (description
     "GNUSim8085 is a graphical simulator,
assembler, and debugger for the Intel 8085 microprocessor.

@itemize
@item A simple editor component with syntax highlighting.
@item A keypad to input assembly language instructions with appropriate arguments.
@item Easy view of register contents.
@item Easy view of flag contents.
@item Hexadecimal/decimal converter.
@item View of stack, memory and I/O contents.
@item Support for breakpoints for program debugging.
@item Stepwise program execution.
@item One click conversion of assembly program to opcode listing.
@item Printing support.
@item UI translated in various languages.
@end itemize")
    (license license:gpl2+)))

(define-public pcsxr
  ;; No release since 2017.
  (let ((commit "6484236cb0281e8040ff6c8078c87899a3407534"))
    (package
      (name "pcsxr")
      ;; Version is tagged here: https://github.com/frealgagu/PCSX-Reloaded
      (version "1.9.95")
      (source
       (origin
         (method git-fetch)
         (uri (git-reference
               (url "https://github.com/pcsxr/PCSX-Reloaded")
               (commit commit)))
         (sha256
          (base32
           "138mayp7zi9v4l3lm5f6xxkds619w1fgg769zm8s45c84jbz7dza"))
         (file-name (git-file-name name commit))))
      (build-system cmake-build-system)
      (arguments
       `(#:tests? #f                    ;no "test" target
         #:configure-flags
         (list "-DSND_BACKEND=pulse"
               "-DENABLE_CCDDA='ON'"
               "-DUSE_LIBARCHIVE='ON'"
               "-DUSE_LIBCDIO='ON'")
         #:phases
         (modify-phases %standard-phases
           (add-after 'unpack 'cd-subdir
             (lambda _ (chdir "pcsxr") #t))
           (add-before 'configure 'fix-cdio-lookup
             (lambda* (#:key inputs #:allow-other-keys)
               (substitute* "cmake/FindCdio.cmake"
                 (("/usr/include/cdio")
                  (search-input-directory inputs "/include/cdio")))))
           (add-after 'install 'wrap-program
             (lambda* (#:key inputs outputs #:allow-other-keys)
               (wrap-program (string-append (assoc-ref outputs "out")
                                            "/bin/pcsxr")
                 ;; For GtkFileChooserDialog.
                 `("GSETTINGS_SCHEMA_DIR" =
                   (,(string-append (assoc-ref inputs "gtk+")
                                    "/share/glib-2.0/schemas"))))
               #t)))))
      (native-inputs
       (list pkg-config intltool
             `(,glib "bin")))
      (inputs
       (list libcdio
             sdl2
             gtk+
             ffmpeg-4
             libxv
             libarchive
             pulseaudio))
      (home-page "https://archive.codeplex.com/?p=pcsxr")
      (synopsis "PlayStation emulator")
      (description
       "A PlayStation emulator based on PCSX-df Project with bugfixes and
improvements.")
      (license license:gpl2+))))

(define-public gens-gs
  (package
    (name "gens-gs")
    (version "7")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "https://retrocdn.net/images/6/6d/Gens-gs-r"
                           version ".tar.gz"))
       (sha256
        (base32
         "1ha5s6d3y7s9aq9f4zmn9p88109c3mrj36z2w68jhiw5xrxws833"))))
    (build-system glib-or-gtk-build-system)
    (arguments
     `(#:system "i686-linux"
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'fix-CFLAGS
           (lambda* _
             ;; Remove GTK API deprecation flags that cause build errors.
             (substitute* "configure"
               (("GTK_CFLAGS=\"\\$GTK_CFLAGS .*\"") ""))
             #t)))))
    (native-inputs
     (list pkg-config nasm))
    (inputs
     `(("sdl" ,sdl)
       ("gtk" ,gtk+-2)))
    (home-page "https://segaretro.org/Gens/GS")
    (synopsis "Emulator for Sega Genesis/Mega Drive systems")
    (description
     "Gens/GS is an emulator for the Mega Drive (also known as Sega Genesis),
derived from Gens.  Project goals include clean source code, combined features
from various forks of Gens, and improved platform portability.")
    (supported-systems '("i686-linux" "x86_64-linux"))
    (license license:gpl2+)))

(define-public bsnes
  (package
    (name "bsnes")
    (version "115")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/bsnes-emu/bsnes")
             (commit (string-append "v" version))))
       (file-name (git-file-name name version))
       (sha256
        (base32
         "0j054x38fwai61vj36sc04r3zkzay5acq2cgd9zqv5hs51s36g5b"))))
    (build-system gnu-build-system)
    (arguments
     `(#:make-flags (list "-C" "bsnes"
                          ;; Remove march=native
                          "local=false"
                          (string-append "prefix=" (assoc-ref %outputs "out")))
       #:tests? #f                      ; No tests.
       #:phases (modify-phases %standard-phases
                  (delete 'configure))))
    (native-inputs
     (list pkg-config))
    (inputs
     `(("alsa-lib" ,alsa-lib)
       ("ao" ,ao)
       ("cairo" ,cairo)
       ("eudev" ,eudev)
       ("gtksourceview-2" ,gtksourceview-2)
       ("libxrandr" ,libxrandr)
       ("libxv" ,libxv)
       ("openal" ,openal)
       ("pulseaudio" ,pulseaudio)
       ("sdl2" ,sdl2)))
    (home-page "https://bsnes.dev/")
    (synopsis "Emulator for the Super Nintendo / Super Famicom systems")
    (description
     "bsnes is a Super Nintendo / Super Famicom emulator that focuses on
performance, features, and ease of use.")
    (license license:gpl3)))

(define-public zsnes
  (package
    (name "zsnes")
    (version "2.0.12")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/xyproto/zsnes")
                    (commit version)))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "0g9l1ij3p1adkp97wkp0dz44i2xpmsvfpkxvlfkpr7190dibsgsz"))))
    (build-system gnu-build-system)
    (arguments
     (list #:system "i686-linux"        ;requires 32 bit libraries to build
           #:tests? #f                  ;no test suite
           #:make-flags
           #~(list (string-append "CC=" #$(cc-for-target))
                   (string-append "CXX=" #$(cxx-for-target))
                   (string-append "PREFIX=" #$output))
           #:phases #~(modify-phases %standard-phases
                        (delete 'configure)))) ;no configure script
    (native-inputs (list nasm pkg-config))
    (inputs (list glib libpng mesa ncurses sdl zlib))
    (home-page "https://www.zsnes.com")
    (synopsis "Super Nintendo Entertainment System emulator")
    (description "ZSNES is a @acronym{Super Nintendo Entertainment System,
SNES} emulator that can play most games at full speed with sound and special
graphic filters.  Some of its features include:
@itemize
@item Support for smooth and dynamic image scaling
@item Support for rewinding and fast-forwarding in-game
@item JMA compression format
@item Change the appearance of the GUI
@item Take screenshots of currently running games
@item Saving the game at any point by recording the console’s state
@item Record movies of gameplay which can be played back.
@end itemize")
    (license license:gpl2+)
    (supported-systems (list "x86_64-linux"))))

;; python-pwntools requires a -rc release of unicorn
(define-public unicorn
  (let ((unless-x86
          (lambda (code)
            (if (member (%current-system) '("x86_64-linux" "i686-linux"))
              '()
              code))))
    (package
      (name "unicorn")
      (version "1.0.2-rc4")
      ;; NOTE: unicorn ships a bundled QEMU, but with a lot of custom modifications.
      (source
       (origin
         (method git-fetch)
         (uri (git-reference
               (url "https://github.com/unicorn-engine/unicorn")
               (commit version)))
         (file-name (git-file-name name version))
         (sha256
          (base32
           "17nyccgk7hpc4hab24yn57f1xnmr7kq4px98zbp2bkwcrxny8gwy"))))
      (outputs '("out" "python"))
      ;; The main library is not written in Python, but the build process has
      ;; little in common with any defined build system, so we might as well
      ;; build on top of python-build-system and make use of all
      ;; the Python-specific phases that can be reused.
      (build-system python-build-system)
      (arguments
       `(#:modules ((srfi srfi-26)
                    (guix build python-build-system)
                    (guix build utils))
         #:phases
         (modify-phases %standard-phases
           (add-before 'build 'build-library
             (lambda* (#:key inputs #:allow-other-keys)
               (invoke "make"
                       "-j" (number->string (parallel-job-count))
                       "UNICORN_STATIC=no"
                       "CC=gcc")))
           (add-after 'build-library 'install-library
             (lambda* (#:key outputs #:allow-other-keys)
               (invoke "make" "install"
                       "UNICORN_STATIC=no"
                       (string-append
                        "PREFIX="
                        (assoc-ref outputs "out")))))
           (add-before 'build 'prepare-bindings
             (lambda* (#:key outputs #:allow-other-keys)
               (chdir "bindings/python")
               ;; Set this environment variable so that the Python bindings
               ;; don't build their own copy of the shared object, but use
               ;; a dummy value such that the bindings test suite uses the
               ;; same mechanism for loading the library as any other user.
               (setenv "LIBUNICORN_PATH" "1")
               (substitute* "unicorn/unicorn.py"
                 (("_path_list = \\[.*")
                  (string-append
                   "_path_list = [\""
                   (assoc-ref outputs "out")
                   ;; eat the rest of the list
                   "/lib\"] + 0*[")))
               #t))
           (add-before 'check 'check-library
             (lambda* (#:key outputs #:allow-other-keys)
               (for-each
                 (lambda (suite)
                   (with-directory-excursion
                     (string-append "../../tests/" suite)
                     (invoke "make" "test" "CC=gcc"
                             ,@(unless-x86
                                '("AS=i686-unknown-linux-gnu-as"
                                  "OBJCOPY=i686-unknown-linux-gnu-objcopy")))))
                 '("unit" "regress"))
               #t))
           (add-after 'install 'install-samples
             (lambda* (#:key outputs #:allow-other-keys)
               (let* ((python-samples (find-files "." "sample_.*"))
                      (c-samples (find-files "../../samples" ".*\\.c"))
                      (python-docdir
                        (string-append (assoc-ref outputs "python")
                                       "/share/doc/unicorn/samples"))
                      (c-docdir
                        (string-append (assoc-ref outputs "out")
                                       "/share/doc/unicorn/samples")))
                 (for-each (cut install-file <> c-docdir) c-samples)
                 (for-each (cut install-file <> python-docdir) python-samples)
                 #t))))))
      (native-inputs
       ;; NOTE: cross-binutils needs to be wrapped with unless-x86, as otherwise
       ;; the linker provided by the package will be used, circumventing the ld-wrapper.
       `(,@(unless-x86
            `(("assembler-for-tests" ,(cross-binutils "i686-unknown-linux-gnu"))))
         ("cmocka" ,cmocka)
         ("hexdump-for-tests" ,util-linux)))
      (home-page "https://www.unicorn-engine.org")
      (synopsis "Unicorn CPU emulator framework")
      (description
       "Unicorn is a lightweight, multi-platform, multi-architecture CPU emulator
framework based on QEMU.")
      (license license:gpl2+))))

(define-public ppsspp
  (package
    (name "ppsspp")
    (version "1.14.4")
    (source
     (origin
       (method git-fetch)
       (uri (git-reference
             (url "https://github.com/hrydgard/ppsspp")
             (commit (string-append "v" version))))
       (sha256
        (base32 "1l80zs1khph4a3g3hnh91awafmyy6wdcayb81xnflkzmpv3bwq8i"))
       (file-name (git-file-name name version))
       (patches
        (search-patches "ppsspp-disable-upgrade-and-gold.patch"))
       (modules '((guix build utils)))
       (snippet
        `(begin
           ;; The following is quite a heavy-handed way of unbundling PPSSPP.
           ;; There are still a number of external sources, that we don't
           ;; remove here.  Some may be packaged, others are not.
           ;; First, we patch existing sources to include the right headers.
           (substitute* (append (find-files "Common" ".*\\.(h|cpp)")
                                (find-files "Core" ".*\\.(h|cpp)")
                                (find-files "GPU" ".*\\.(h|cpp)")
                                (find-files "SDL" ".*\\.(h|cpp)")
                                (find-files "UI" ".*\\.(h|cpp)"))
             ;; These headers are all hard-coded in the original source.
             (("ext/cityhash/") "")
             (("ext/glslang/glslang/") "glslang/")
             (("ext/glslang/") "glslang/")
             (("ext/miniupnp/") "")
             (("ext/SPIRV-Cross/") "spirv_cross/")
             (("ext/vulkan/") "vulkan/")
             (("ext/xxhash.h") "xxhash.h")
             ;; These definitions do not actually exist in the Vulkan headers,
             ;; but PPSSPP defines them in ext/vulkan.
             (("VK_FORMAT_BEGIN_RANGE") "VK_FORMAT_UNDEFINED")
             (("VK_FORMAT_END_RANGE") "VK_FORMAT_ASTC_12x12_SRGB_BLOCK"))
           ;; Next, we patch CMakeLists.
           (substitute* "CMakeLists.txt"
             ;; Drop unnecessary includes and targets.
             (("include_directories\\(ext/glslang\\)") "")
             (("target_include_directories\\(.*ext/xxhash\\)") "")
             (("target_include_directories\\(.*ext/cityhash\\)") "")
             (("set_target_properties\\(cityhash .*\\)") "")
             ;; Fix linking to GLEW.
             (("TARGET Ext::GLEW") "true")
             (("target_link_libraries\\(native Ext::GLEW\\)")
              "find_package(GLEW)\ntarget_link_libraries(native GLEW::GLEW)")
             (("Ext::Snappy") "snappy")
             ;; Don't search for cityhash/xxhash, we already have them.
             (("add_library\\((city|xx)hash STATIC") "if()\nendif(")
             (("ext/xxhash\\.[ch]") "")
             (("ext/cityhash/.*\\.(cpp|h)") "")
             (("if\\(USE_MINIUPNPC\\)" all)
              (string-append all "
find_package(miniupnpc)
target_link_libraries(${CoreLibName} miniupnpc ${LDLIBS})
elseif(FALSE)"))
             ;; Link all of spirv-cross.
             (("spirv-cross-glsl" all)
              (string-append all
                             " spirv-cross-core spirv-cross-cpp"
                             " spirv-cross-reflect spirv-cross-util")))
           (substitute* "ext/CMakeLists.txt"
             (("add_subdirectory\\(glew.*") "")
             (("add_subdirectory\\(glslang.*") "")
             (("add_subdirectory\\(snappy.*") "")
             (("add_subdirectory\\(SPIRV-Cross-build.*") "")
             (("add_subdirectory\\(zstd.*") ""))
           ;; Finally, we can delete the bundled sources.
           (for-each delete-file-recursively
                     '("ext/cmake"
                       "ext/glew"
                       "ext/glslang" "ext/glslang-build"
                       "ext/miniupnp" "ext/miniupnp-build"
                       "ext/native"
                       "ext/snappy"
                       "ext/SPIRV-Cross" "ext/SPIRV-Cross-build"
                       "ext/vulkan"
                       "ext/xxhash.c"
                       "ext/xxhash.h"
                       "ext/zlib"
                       "ext/zstd"))
           ;; Since we are not including git as an input, PPSSPP is confused
           ;; about its version.  Let's fix that here.
           (substitute* "git-version.cmake"
             (("unknown") ,version))))))
    (build-system cmake-build-system)
    (native-inputs (list pkg-config python))
    (inputs (list bash
                  cityhash
                  ffmpeg-4
                  glew
                  glslang
                  libpng
                  libzip
                  mesa
                  miniupnpc
                  sdl2
                  snappy
                  spirv-cross
                  vulkan-headers
                  vulkan-loader
                  xxhash
                  zlib
                  `(,zstd "lib")))
    (arguments
     (list
      #:out-of-source? #f
      #:configure-flags #~(list "-DARMIPS_USE_STD_FILESYSTEM=ON" ; from armips
                                "-DUSE_DISCORD=OFF"
                                "-DUSE_SYSTEM_FFMPEG=ON"
                                "-DUSE_SYSTEM_LIBZIP=ON"
                                "-DUSE_SYSTEM_ZSTD=ON"
                                ;; for testing
                                "-DUNITTEST=ON" "-DHEADLESS=ON")
      #:phases
      #~(modify-phases %standard-phases
          (add-after 'unpack 'add-external-sources
            (lambda* (#:key inputs #:allow-other-keys)
              ;; TODO: unbundle armips.
              (copy-recursively #$(package-source armips) "ext/armips")))
          (replace 'install
            (lambda* (#:key inputs outputs #:allow-other-keys)
              (let* ((out (assoc-ref outputs "out"))
                     (bin/ppsspp (string-append out "/bin/ppsspp"))
                     (share (string-append out "/share/ppsspp")))
                (copy-recursively "icons/hicolor"
                                  (string-append out "/share/icons/hicolor"))
                (install-file "PPSSPPSDL" share)
                (copy-recursively "assets" (string-append share "/assets"))

                (make-desktop-entry-file
                 (string-append out "/share/applications/ppsspp.desktop")
                 #:name "PPSSPP"
                 #:exec (string-append share "/PPSSPPSDL")
                 #:icon "ppsspp")
                (mkdir-p (string-append out "/bin"))
                (with-output-to-file bin/ppsspp
                  (lambda ()
                    (format #t "#!~a~%exec ~a/PPSSPPSDL \"$@\""
                            (search-input-file inputs "/bin/bash") share)))
                (chmod bin/ppsspp #o755)))))))
    (home-page "https://www.ppsspp.org/")
    (synopsis "PSP emulator")
    (description
     "PPSSPP is a ``high-level'' emulator simulating the PSP operating
system.")
    (license license:gpl2+)))

(define-public exomizer
  (package
    (name "exomizer")
    (version "3.1.2")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                     (url "https://bitbucket.org/magli143/exomizer.git")
                     (commit version)))
              (file-name (string-append name "-" version "-checkout"))
              (sha256
               (base32
                "04795l75nlbz0g5gp1xx8kiwbrm5pv5pj24ja02cnan6mglj7j0w"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f  ; No target exists
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'chdir
           (lambda _
             (delete-file-recursively "exodecrs")
             (delete-file-recursively "rawdecrs")
             (chdir "src")
             ;; Those will be regenerated.
             (delete-file "asm.tab.h")
             (delete-file "asm.tab.c")
             (delete-file "lex.yy.c")
             #t))
         (replace 'configure
           (lambda _
             (setenv "CC" ,(cc-for-target))
             #t))
         (replace 'install
           (lambda* (#:key outputs #:allow-other-keys)
             (let ((out-bin (string-append (assoc-ref outputs "out") "/bin")))
               (install-file "exomizer" out-bin)
               (install-file "exobasic" out-bin))
             #t)))))
    (native-inputs
     (list flex bison))
    (synopsis "Compressor for use on Commodore home computers")
    (description "This program compresses files in a way that tries to be as
efficient as possible but still allows them to be decompressed in environments
where CPU speed and RAM are limited.  It also generate a self-extractor for use
on a Commodore C64, C128 etc.")
    (home-page "https://bitbucket.org/magli143/exomizer/wiki/Home")
    ;; Some files are LGPL 2.1--but we aren't building from or installing those.
    ;; zlib license with an (non-)advertising clause.
    (license license:zlib)))

(define-public qtrvsim
  (package
    (name "qtrvsim")
    (version "0.9.5")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/cvut/qtrvsim")
                    (commit (string-append "v" version))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "1zi39q8ajkzl8d47sacj0dk1a2n5jmfgr29x9iby59v792g7p8ac"))
              (modules '((guix build utils)))
              (snippet #~(begin (delete-file-recursively "external/libelf")))))
    (build-system qt-build-system)
    (inputs (list libelf qtbase-5))
    (home-page "https://github.com/cvut/qtrvsim")
    (synopsis "RISC-V CPU simulator for education purposes")
    (description "RISC-V CPU simulator for education purposes with pipeline and
cache visualization.  Developed at FEE CTU for computer architecture classes.")
    (license license:gpl3+)))

(define-public cc65
  (package
    (name "cc65")
    (version "2.19")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                     (url "https://github.com/cc65/cc65.git")
                     (commit (string-append "V" version))))
              (file-name (string-append name "-" version "-checkout"))
              (sha256
               (base32
                "01a15yvs455qp20hri2pbg2wqvcip0d50kb7dibi9427hqk9cnj4"))))
    (build-system gnu-build-system)
    (arguments
     `(#:tests? #f  ; No target exists.
       #:make-flags
       (list "BUILD_ID=V2.18 - Git 55528249"
             (string-append "PREFIX=" (assoc-ref %outputs "out")))
       #:phases
       (modify-phases %standard-phases
         (replace 'configure
           (lambda* (#:key source #:allow-other-keys)
             ;; We include $SOURCE/include in C_INCLUDE_PATH.  Remove it.
             (setenv "C_INCLUDE_PATH"
               (string-join
                (filter (lambda (name)
                          (not (string=? name (string-append source "/include"))))
                        (string-split (getenv "C_INCLUDE_PATH") #\:))
                ":"))
             #t)))))
    (synopsis "Development environment for 6502 systems")
    (description "This package provides a development environment for 6502 systems, including macro assembler, C compiler, linker, librarian and several other tools.")
    (home-page "https://cc65.github.io/")
    (license license:zlib)))

(define-public uxn
  (let ((commit "83237c9641490d303a42c81ca247314d11055dea")
        (revision "1"))
    (package
      (name "uxn")
      (version (git-version "0.1.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://git.sr.ht/~rabbits/uxn")
                      (commit commit)))
                (file-name (string-append name "-" version))
                (sha256
                 (base32
                  "159qfz66k1jc43jhyl8by3yiphsr2dyiyclw1x7mkr3zciwc29z3"))))
      (build-system gnu-build-system)
      (arguments
       (list #:tests? #f ;no tests
             #:phases #~(modify-phases %standard-phases
                          (delete 'configure)
                          (replace 'build
                            (lambda _
                              (setenv "CC" #$(cc-for-target))
                              (invoke "./build.sh" "--no-run")))
                          (replace 'install
                            (lambda _
                              (let ((bin (string-append #$output "/bin"))
                                    (share (string-append #$output
                                                          "/share/uxn")))
                                (with-directory-excursion "bin"
                                  (for-each (lambda (x)
                                              (install-file x bin))
                                            '("uxnasm" "uxncli" "uxnemu"))
                                  (for-each (lambda (x)
                                              (install-file x share))
                                            '("asma.rom" "launcher.rom")))))))))
      (inputs (list sdl2))
      (home-page "https://100r.co/site/uxn.html")
      (synopsis "Assembler and emulator for the Uxn stack-machine")
      (description
       "This package provides an assembler and emulator for the Uxn
stack-machine, written in ANSI C.  Graphical output is implemented using SDL2.")
      (license license:expat))))

(define-public emu8051
  (let ((commit "5dc681275151c4a5d7b85ec9ff4ceb1b25abd5a8")
        (revision "1"))
    (package
      (name "emu8051")
      (version (git-version "0.1" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://github.com/jarikomppa/emu8051")
                      (commit commit)))
                (file-name (git-file-name name version))
                (sha256
                 (base32
                  "1xxmkcwvd5fjnhwbricafg4xvxvr8dxhfanyfp4rbksw37dgk2fx"))
                (modules '((guix build utils)))
                (snippet #~(begin
                             ;; Replace LDFLAGS -lcurses to -lncurses
                             (substitute* "Makefile"
                               (("-lcurses") "-lncurses"))))))
      (build-system gnu-build-system)
      (arguments
       (list #:tests? #f ;No test suite
             #:make-flags #~(list (string-append "CC="
                                                 #$(cc-for-target)))
             #:phases
             #~(modify-phases %standard-phases
                 (delete 'configure)    ;No ./configure script
                 (replace 'install
                   ;; No installation procedure
                   (lambda _
                     (install-file "emu"
                                   (string-append #$output "/bin")))))))
      (inputs (list ncurses))
      (home-page "https://github.com/jarikomppa/emu8051")
      (synopsis "8051/8052 emulator with curses-based UI")
      (description "emu8051 is a simulator of the 8051/8052 microcontrollers.")
      (license license:expat))))